Vortech on 2.87 pulley? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Gopherboy6956 · 01-16-2015, 12:35 PM

Quote:

Originally Posted by Whatabouteggs

To play devil's advocate, you could run a pulley like that with a wastegate and build boost faster.

A 2.87 pulley with an electronically controlled external wastegate tied to an octane/ethanol sensor would be a kickass tune.

I thought about doing something like that, but at the end of the day I just want to keep it simple. I don't have plans to upgrade internals / clutch stuff yet, so staying under 300hp is ideal currently.

Whatabouteggs · 01-18-2015, 10:14 PM

Quote:

Originally Posted by BirgeyT1

off topic but yopu definitely listen to the Ticket with that awesome username!

Well it was either that or Ragonk Force.

Cal3000 · 01-24-2015, 07:42 PM

I was reading on the vortech website that anything above 10psi you will need to change the bypass valve?

enomadra · 06-09-2018, 10:19 PM

Quote:

Originally Posted by Gopherboy6956

So - Stock is 3.48, then there's 3.125, and 2.87 - I want to run pump gas - so 3.125 is probably the most useful one to nab?

And is the correct gates pulley for that setup the Hundai Genesis one?

Thanks!

I shredded the gates blue racing belt because it jump of the edge of the pulley when I hit the rev limiter. I'm now running the 1/2 shorter belt and it's been good so far 2500 miles. I was a bear to get on but possible.

Super05 · 12-18-2018, 12:14 PM

How big is the crank pulley on the BRZ?

Gopherboy6956 · 12-18-2018, 12:43 PM

I'd have to measure one - which I have somewhere in my garage - but the OEM part number is 12305AA370 so you might be able to google it.

Super05 · 12-18-2018, 01:17 PM

Thanks - Google says 5.826748713587742 - that may not be exact but it's close.

shadowking1711 · 08-22-2020, 05:42 AM

Do any of you have a part number for the belt required to run the 2.87 pulley? I plan on running it soon with 93/E85 Currently making 363HP on E85

bfrank1972 · 08-22-2020, 08:33 PM

Currently running a 3.125 pulley on 93, maybe making somewhere in the upper 200's, never dynoed. Wanted the smaller pully mostly for a little earlier boost rampup, tuner pulled a bit of timing on the top end.

Related question: stock clutch is holding fine on the power it is making now, if I decide to go flex fuel and run E85, think a new clutch is necessary? I don't typically drive like a lunatic, no heavy slippage/launches, mostly just rolling in-gear stuff.

Sent from my SM-G965U using Tapatalk

01-24-2015, 07:42 PM	#17
Cal3000 Senior Member Join Date: Dec 2012 Drives: Panda FR-S Location: Corona, California Posts: 531 Thanks: 297 Thanked 377 Times in 161 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I was reading on the vortech website that anything above 10psi you will need to change the bypass valve? __________________ Vortech SC on 9psi Pulley, Invidia Catless Front Pipe, Invidia N1 Catback Exhaust 242whp/197ft-lb on Mustang Dyno (91 octane water) 284whp/223ft-lb on Mustang Dyno (E85) Delicious Tuning

12-18-2018, 12:43 PM	#20
Gopherboy6956 Senior Member Join Date: Feb 2013 Drives: 13 BRZ Limited WRB Location: Fargo, ND Posts: 723 Thanks: 17 Thanked 296 Times in 195 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	I'd have to measure one - which I have somewhere in my garage - but the OEM part number is 12305AA370 so you might be able to google it. __________________ I plan to live forever. So far, so good. My Build - http://www.ft86club.com/forums/showthread.php?t=31925

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12-18-2018, 12:14 PM	#19
Super05 Member Join Date: Oct 2017 Drives: 6psi 2.5i 180whp looking for more Location: Vermont Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	How big is the crank pulley on the BRZ?

12-18-2018, 01:17 PM	#21
Super05 Member Join Date: Oct 2017 Drives: 6psi 2.5i 180whp looking for more Location: Vermont Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thanks - Google says 5.826748713587742 - that may not be exact but it's close.

08-22-2020, 05:42 AM	#22
shadowking1711 Member Join Date: Jan 2020 Drives: Scion FR-S Location: SC Posts: 16 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Do any of you have a part number for the belt required to run the 2.87 pulley? I plan on running it soon with 93/E85 Currently making 363HP on E85

08-22-2020, 08:33 PM	#23
bfrank1972 Senior Member Join Date: Jul 2013 Drives: 2013 FR-S Argento Location: Westport,CT Posts: 1,855 Thanks: 517 Thanked 1,041 Times in 616 Posts Mentioned: 7 Post(s) Tagged: 1 Thread(s)	Currently running a 3.125 pulley on 93, maybe making somewhere in the upper 200's, never dynoed. Wanted the smaller pully mostly for a little earlier boost rampup, tuner pulled a bit of timing on the top end. Related question: stock clutch is holding fine on the power it is making now, if I decide to go flex fuel and run E85, think a new clutch is necessary? I don't typically drive like a lunatic, no heavy slippage/launches, mostly just rolling in-gear stuff. Sent from my SM-G965U using Tapatalk

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